*New items are underlined.

All 6 units of Fukushima Daiichi Nuclear Power Station have been shut down.

Unit 1 (Shut down) 
-Explosive sound and white smoke were confirmed after the big quake
 occurred at 3:36 pm on March 12. It was assumed to be hydrogen explosion.
-From 3:37 pm on March 25, we started injecting freshwater by a motor
 driven pump which is now powered by the off-site transmission line. 
 Water is currently injected at approx. 3.7 m3/h through reactor feed
 water system piping arrangement.
-We commenced injection of nitrogen gas into Primary Containment Vessel
 at 1:31am on April 7.
-At 9:00 am on August 10, we started to assemble steel frame for the
 Reactor Building Cover.

Unit 2 (Shut down) 
-At approximately 6:00 am on March 15, an abnormal noise began emanating
 from nearby Pressure Suppression Chamber and the pressure within the
 chamber decreased. 
-From 10:10 am on March 26, we started injecting freshwater to the reactor
 and are now injecting fresh water by a motor driven pump powered by the
 off-site transmission line.
 Water is currently injected at approx. 3.5 m3/h through reactor feed
 water system piping arrangement.
-At 8:06 pm on June 28, we started injecting nitrogen gas into the Primary
 Containment Vessel.

Unit 3 (Shut down) 
-Explosive sound and white smoke were confirmed at approximately 11:01am
 on March 14. It was assumed to be hydrogen explosion.
-From 6:02 pm on March 25, we started injecting fresh water to the reactor
 and are now injecting fresh water by a motor driven pump powered by the
 off-site transmission line.
 Water is currently injected at approx. 7.1 m3/h through reactor feed
 water system piping arrangement.
-At 8:01 pm on July 14, injection of nitrogen gas into the Primary
 Containment Vessel started.

Unit 4 (Outage due to regular inspection) 
-At approximately 6 am on March 15, we confirmed the explosive sound and
 the sustained damage around the 5th floor rooftop area of Reactor Building.
-At this moment, we don't think there is any reactor coolant leakage
 inside the primary containment vessel.

Unit 5 (Outage due to regular inspection) 
-Sufficient level of reactor coolant to ensure safety is maintained.
-At 5 am on March 19, we started the Residual Heat Removal System Pump in
 order to cool the spent fuel pool.
-At 2:30 pm on March 20, the reactor achieved cold shutdown.
-At 2:45 pm on July 15, we started the operation of the original Residual
 Heat Removal System Pump (System B).
-At this time, we don't think there is any reactor coolant leakage inside
 the primary containment vessel.

Unit 6 (Outage due to regular inspection) 
-Sufficient level of reactor coolant to ensure safety is maintained.
-At 10:14 pm on March 19, we started the Residual Heat Removal System Pump
 of Unit 6 to cool down Spent Fuel Pool.
-At 7:27 pm on March 20, the reactor achieved cold shutdown. 
-At this time, we don't think there is any reactor coolant leakage inside
 the primary containment vessel.

Operation for cooling the Spent Fuel Pools 
-At 5:21 pm on May 31, we started cyclic cooling of Spent Fuel Pool of
 Unit 2 by using alternative cooling system of the Pool's cooling and
 filtering system.
-At 7:47 pm on June 30, we started cyclic cooling of Spent Fuel Pool of
 Unit 3 by using alternative cooling system of the Pool's cooling and
  filtering system.
-At 12:44 pm on July 31, we started cyclic cooling of Spent Fuel Pool of
 Unit 4 by using alternative cooling system of the Pool's cooling and
 filtering system.
-At 11:22 am on Aug 10, we started cyclic cooling of Spent Fuel Pool of
 Unit 1 by using alternative cooling system of the Pool's cooling and
 filtering system.

Others 
-At 11:00 am on May 10, we started transferring accumulated water from the
 underground level of reactor building to the radiation waste treatment
 facility of Unit 6.
-At around 10 am on June 13, we started the operation of the circulating
 seawater purification facility installed at the screen area of Units 2
 and 3.
-At 8:00 pm on June 17, we started operation of Water Treatment Facility
 against the accumulated water. At 6:00 pm on July 2, we started the
 circulating injection cooling to inject the water, which was treated by
 the accumulated water treatment system, to the reactors through the
 buffer tank.
-At 7:41 pm on August 19, we started treatment of accumulated water by
 parallel operation of one line from the cesium adsorption instrument to
 the decontamination instrument and the other treatment line of the 2nd
 cesium adsorption instrument. 
-At 11:34 am on August 20, we started operation of the desalting facility
 for the spent fuel pool of Unit 4
-At 9:30 am on August 24, we started transfer of accumulated water from
 the turbine building of Unit 3 to Process Main Building in Centralized
 Radiation Waste Treatment Facility.
-At 10:03 am on August 25, we started transfer of accumulated water from
 the turbine building of Unit 2 to High Temperature Incinerator Building
 in Centralized Radiation Waste Treatment Facility.